Disk imaging program?

[Niles Rogoff]

He's saying if you, instead of copying sector by sector, decided put all
the files into a tar file, then tar would be unable to correctly save the
permissions on those files.

This would be in place of dd, and would not be able to copy the boot sector
of a device or partition


On Wed, Jun 25, 2014 at 2:04 PM, John Hupp <ubuntu at prpcompany.com> wrote:

> On 6/25/2014 1:12 PM, Nils Kassube wrote:
>
>> John Hupp wrote:
>>
>>> And point well taken: it does seem to me that, as a refinement of the
>>> initial suggested plan, gzip alone should suffice since we are dealing
>>> with a single-file output from dd and not a collection of files.
>>>
>> Well, you could use a command chain dd | gzip | tar to split the output
>> for several DVDs including a prompt for the next medium.
>>
>> BTW: If you want to save data only, you shouldn't use tar for ntfs
>> partitions because tar doesn't know about the ntfs permissions which
>> different from the Unix permissions.
>>
>>
>> Nils
>>
>>
> Tar must do some processing of its source contents then?  The original
> suggestion for using dd in this thread came from Niles Rogoff, and his
> prescription was to use usplit.  I don't know that this command is native
> to Ubuntu, but I believe split is.  And if split merely does that, then it
> seems like ntfs or unix permissions should be preserved.  Agree?
>
> And I think I still have this question lingering: Does dd knows how to
> prompt for the next DVD (the next split) during a restore operation?
>
>
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